Asserting 'summary get' returns nothing in functional tests

Since no data is available in devstack in our functional test environment,
we make the assertion that 'summary get' returns nothing. This is prone to
update if more complete test scenarios are implemented.

Change-Id: Ic80e39f0d2a75882762ebd6a0dba46033c9fd7f4

.zuul.yaml

@@ -19,6 +19,8 @@
     vars:
       devstack_plugins:
         cloudkitty: https://git.openstack.org/openstack/cloudkitty
+      devstack_localrc:
+        CLOUDKITTY_FETCHER: keystone
       devstack_services:
         ck-api: true
         horizon: false

cloudkittyclient/tests/functional/v1/test_report.py

@@ -22,8 +22,8 @@ class CkReportTest(base.BaseFunctionalTest):
         self.runner = self.cloudkitty
 
     def test_get_summary(self):
-        resp = self.runner('summary get')[0]
-        self.assertEqual(resp['Resource Type'], 'ALL')
+        resp = self.runner('summary get')
+        self.assertEqual(len(resp), 0)
 
     def test_get_summary_with_groupby(self):
         resp = self.runner('summary get', params='-g res_type tenant_id')